Multiple choice

What is the name of the photosensitive input device, which interacts with computer through a cathode-ray tube display?

  1. Plotter

  2. Light pen

  3. Touch user interface

  4. Optical mouse

  5. Hollerith card
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Light pens are used to manipulate information on a computer. It is a small, photosensitive device connected to a computer and moved by hand over an output display. It interacts with a computer through a cathode-ray tube display.

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